LD Systems CURV 500 ES Channel PA System, Black Powerful modular array PA system with wide 110 Degree horizontal sound coverage. Integrated 4 channel mixer with 16 FX presets and Bluetooth connectivity for mobile devices Single 10" sub/three 4" Mid/one 1" high range sat with wave a head Technology Class D amp with 1000W Peak output Max SPL 128dB/frequency response 47 - 20000Hz